sh: dma: Remove unused dmac_search_free_channel()

arch/sh/drivers/dma/dma-api.c:164:5: warning: no previous prototype for 'dmac_search_free_channel' [-Wmissing-prototypes]

dmac_search_free_channel() never had a user in upstream, remove it.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/82d5efdde44f9489c5a7d11d0a19750445116c95.1709326528.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index 89cd4a3b4ccafbe27e1d766ccfefc59e5f6bed84..f49097fa634c36d453f6976e644ef4413a1d3619 100644 (file)
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -161,33 +161,6 @@ int request_dma_bycap(const char **dmac, const char **caps, const char *dev_id)
 }
 EXPORT_SYMBOL(request_dma_bycap);
 
-int dmac_search_free_channel(const char *dev_id)
-{
-       struct dma_channel *channel = { 0 };
-       struct dma_info *info = get_dma_info(0);
-       int i;
-
-       for (i = 0; i < info->nr_channels; i++) {
-               channel = &info->channels[i];
-               if (unlikely(!channel))
-                       return -ENODEV;
-
-               if (atomic_read(&channel->busy) == 0)
-                       break;
-       }
-
-       if (info->ops->request) {
-               int result = info->ops->request(channel);
-               if (result)
-                       return result;
-
-               atomic_set(&channel->busy, 1);
-               return channel->chan;
-       }
-
-       return -ENOSYS;
-}
-
 int request_dma(unsigned int chan, const char *dev_id)
 {
        struct dma_channel *channel = { 0 };